gas water heaters

Abstract

The present application discloses a gas water heater, which includes a mounting shell, a heating assembly, an airflow buffer, and a liquid infusion tube. The heating assembly is disposed within the mounting shell and defines a heating space, and a first air outlet is disposed on the top of the heating assembly. The airflow buffer includes a buffer shell and a blocking member. The bottom of the buffer shell is connected to and cooperates with the first air outlet, and the top of the buffer shell extends out of the mounting shell. The buffer shell defines a buffer space, and the blocking member is disposed within the buffer shell and divides the buffer space into an air inlet channel and an air outlet channel. The air inlet channel and the air outlet channel are connected. The bottom wall of the buffer shell is provided with a second air inlet that is connected to both the air inlet channel and the heating space, and the top wall of the buffer shell is provided with a second air outlet that is connected to the air outlet channel. The blocking member is used to block smoke. The liquid infusion tube passes through the airflow buffer and the heating assembly in sequence, and the smoke is used to heat the liquid in the liquid infusion tube. The present application can reduce the noise when smoke passes through the second air outlet and recycle the waste heat of the smoke.

Description

Technical Field

[0001] The present application relates to the field of water heaters, and in particular to a gas water heater. Background Art

[0002] In related technologies, gas water heaters burn gas to generate flue gas, which is used to heat the liquid in the gas water heater's liquid inlet pipe. The flue gas then flows out of the gas water heater through the exhaust vent at the top. Gas water heaters require high-speed intake and exhaust of gas to maintain the temperature within the gas water heater within a preset safety range. As the flue gas passes through the exhaust vent, it collides with the vent and generates noise, which degrades the user experience. Furthermore, the waste heat from the flue gas cannot be effectively recycled, reducing the energy efficiency of the gas water heater. Summary of the Invention

[0003] In order to reduce the noise when smoke passes through the exhaust hole, improve the user experience of the gas water heater, and improve the energy utilization rate of the gas water heater, the present application provides a gas water heater.

[0004] The gas water heater provided in this application adopts the following technical solution:

[0005] A gas water heater comprises: an installation shell, the installation shell defines an installation space, and the installation space is connected to the external environment; a heating component, the heating component is arranged in the installation shell, the heating component defines a heating space, the bottom of the heating component is provided with a first air inlet hole, and the top of the heating component is provided with a first air outlet hole, and the first air inlet hole and the first air outlet hole are both connected to the heating space.

[0006] An airflow buffer, the airflow buffer includes a buffer shell and a blocking member, the bottom of the buffer shell is connected and cooperated with the first air outlet, the top of the buffer shell extends out of the mounting shell, the buffer shell defines a buffer space, the blocking member is arranged in the buffer shell, the blocking member separates the buffer space into an air inlet channel and an air outlet channel, and the air inlet channel and the air outlet channel are connected, the bottom wall of the buffer shell is provided with a second air inlet, the second air inlet is connected with the air inlet channel and the heating space, the top wall of the buffer shell is provided with a second air outlet connected with the air outlet, the smoke passes through the air inlet channel and the air outlet channel in turn, and the blocking member is used to block the smoke.

[0007] The infusion tube passes through the airflow buffer and the heating component in sequence, and the flue gas in the heating component and the airflow buffer is used to heat the liquid in the infusion tube.

[0008] By adopting the above technical solution, by providing a blocking member within the buffer housing, the smoke is blocked by the blocking member after entering the buffer housing, reducing its velocity. The smoke then heats the liquid in the infusion tube within the buffer housing. Compared to the prior art, the intensity of the impact of the smoke passing through the second outlet can be reduced, thereby reducing noise generated by the smoke passing through the second outlet. This improves the user experience of the gas water heater and achieves the technical effect of recycling waste heat from the smoke, thereby increasing the energy efficiency of the gas water heater.

[0009] Preferably, there are multiple blocking members, and the multiple blocking members are arranged in sequence and spaced apart along the radial direction of the buffer shell. One of any two adjacent blocking members is provided on the inner top wall of the buffer shell, and the other is provided on the inner bottom wall of the buffer shell. Along the radial direction of the buffer shell, the innermost blocking member among the multiple blocking members is provided on the inner bottom wall of the buffer shell and is arranged in a ring around the outer side of the second air inlet hole. The outermost blocking member among the multiple blocking members is provided on the inner top wall of the buffer shell. A buffer channel is defined between any two adjacent blocking members. The buffer channel is located between the air inlet channel and the air outlet channel, and the buffer channel is connected to both the air inlet channel and the air outlet channel.

[0010] By adopting the above technical solution, after the smoke enters the air inlet channel, the smoke passes through at least one buffer channel and enters the air outlet channel. When the smoke passes through the buffer channel, the smoke is blocked by multiple blocking members, thereby further reducing the speed of the smoke, further reducing the intensity of the collision impact between the smoke and the second air outlet, and further reducing the noise when the smoke passes through the second air outlet.

[0011] Preferably, there are multiple second air outlet holes, and multiple diverter pieces are provided in the air outlet channel. The multiple second air outlet holes and the multiple diverter pieces are spaced apart along the circumferential direction of the buffer shell, and the multiple diverter pieces are arranged in a one-to-one correspondence with the multiple second air outlet holes. One end of the diverter piece is provided on the inner top wall of the buffer shell, and the other end extends toward the bottom wall of the buffer shell. The diverter piece is connected between the inner circumferential wall of the buffer shell and the blocking piece, and the diverter piece is used to divert and buffer the smoke.

[0012] By adopting the above technical solution, by setting up multiple second air outlets, the smoke flows out of the buffer shell from the multiple second air outlets, and multiple diverters divert the smoke at the same time, so as to avoid the smoke from concentrating at one second air outlet as much as possible, and avoid the smoke from being unable to be discharged from the buffer shell in time, resulting in difficulty in the heating component to inhale cold air, and avoid the temperature of the heating component being higher than the preset safety temperature value, thereby improving the working reliability of the gas water heater.

[0013] Preferably, the gas water heater also includes: an exhaust assembly, the top wall of the buffer shell is provided with an exhaust hole and a accommodating hole, the accommodating hole is opposite to and connected with the air inlet channel, the exhaust hole is provided with a shielding member near the end wall cover of the air inlet channel, the shielding member is opposite to the air inlet channel and defines the exhaust channel, the outer peripheral wall of the shielding member is provided with at least one communicating hole, the exhaust hole, the communicating hole, the exhaust channel and the air inlet channel are arranged to be connected to each other in pairs, the exhaust assembly includes a cover body and a driving member, the cover body is pivotally arranged on the exhaust hole, the driving member is movably arranged on the accommodating hole and is transmission-connected to the cover body, the driving member is suitable for being driven by flue gas to drive the cover body to rotate around the pivot axis of the cover body, so that the cover body opens the exhaust hole.

[0014] By adopting the above technical solution, when the air pressure value in the buffer shell is greater than or equal to the preset air pressure value, the flue gas in the air inlet channel drives the driving member to move away from the air inlet channel through the accommodating hole, and the driving member drives the cover body to rotate around the pivot axis between the cover body and the exhaust hole to open the exhaust hole, and the flue gas in the air inlet channel directly flows out of the buffer shell through the exhaust hole, thereby preventing the flue gas from flowing out of the buffer shell through the second air outlet too slowly, preventing the flue gas from accumulating in the combustion chamber of the buffer shell and the heating component, preventing the fan from having difficulty in blowing cold gas from the external environment into the combustion chamber, and preventing the temperature of the combustion chamber from exceeding the preset safety temperature value, thereby improving the working reliability of the gas water heater.

[0015] Preferably, the driving member includes a driving part and a counterweight part, the driving part is connected and cooperated with the counterweight part, and the counterweight part is located at the end of the accommodating hole close to the air inlet channel, and the driving part is transmission-connected with the cover body. When the counterweight part is driven by smoke, the counterweight part drives the driving part to drive the cover body to rotate to open the exhaust hole. When the counterweight part is not driven by smoke, the counterweight part drives the driving part to drive the cover body to rotate to close the exhaust hole.

[0016] By adopting the above technical solution, the smoke drives the counterweight part to drive the driving part to move away from the air inlet channel, and the driving part drives the cover body to rotate to open the exhaust hole. When the air pressure value in the buffer shell is lower than the preset air pressure value, under the action of gravity, the counterweight part drives the driving part to move closer to the air inlet channel, and the driving part drives the cover body to rotate to close the exhaust hole, thereby achieving the technical effect of the driving part driving the cover body to open or close the exhaust hole according to the air pressure value in the buffer shell.

[0017] Preferably, the cover body has a pivot shaft, which is pivotally connected to the inner peripheral wall of the exhaust hole. One end of the pivot shaft extends into the accommodating hole and is ringed with driven teeth at the end. The driving part is provided with driving teeth, and the driving teeth are meshed and connected with the driven teeth.

[0018] By adopting the above-mentioned technical solution, when the counterweight part drives the driving part to move closer to or away from the air inlet channel, the driving part drives the pivot shaft to rotate through the driving teeth and the driven teeth, and the pivot shaft drives the cover body to rotate around the central axis of the pivot shaft, thereby achieving the technical effect of the driving part driving the cover body to rotate to open or close the exhaust hole.

[0019] Preferably, a limiting groove is provided on the inner peripheral wall of the accommodating hole, and the counterweight portion is movably arranged in the limiting groove and is suitable for limiting cooperation with the limiting groove.

[0020] By adopting the above technical solution, when the counterweight part is driven by the flue gas to move away from the air inlet channel, the counterweight part and the top wall of the limit groove are stopped and limited. When the counterweight part moves close to the air inlet channel under the action of gravity, the counterweight part and the bottom wall of the limit groove are stopped and limited. The limited cooperation between the counterweight part and the limit groove can prevent the driving part from moving close to the air inlet channel and separating from the accommodating hole under the action of gravity, thereby improving the working reliability of the gas water heater.

[0021] Preferably, the liquid infusion pipe includes a liquid inlet pipe, a preheating pipe and a liquid outlet pipe, one end of the liquid inlet pipe is connected with one end of the preheating pipe, the other end of the preheating pipe passes through the airflow buffer and is connected with one end of the liquid outlet pipe, the other end of the liquid outlet pipe passes through the heating assembly, the liquid flows in from the end of the liquid inlet pipe away from the preheating pipe, and flows out from the end of the liquid outlet pipe away from the preheating pipe, the preheating pipe forms a heat exchange part in the buffer shell, the heat exchange part is spirally wound around the outer peripheral wall of the blocking member, and the flue gas is used to heat the liquid in the heat exchange part.

[0022] By adopting the above technical solution, a heat exchange portion is formed in the buffer shell through the preheating tube, and the heat exchange portion is spirally wound around the outer peripheral wall of the blocking member, thereby extending the time for the liquid in the preheating tube to pass through the buffer shell, and the flue gas can fully exchange heat with the liquid in the heat exchange portion, so that the waste heat of the flue gas can be recovered and utilized as much as possible, thereby further improving the energy utilization rate of the gas water heater.

[0023] Preferably, the gas water heater also includes: a directional control valve, a water pressure detection component and a controller, the directional control valve is provided with a first liquid inlet end, a first liquid outlet end, a second liquid inlet end and a second liquid outlet end, the liquid inlet pipe is connected to the first liquid inlet end, one end of the preheating pipe is connected to the first liquid outlet end, the other end of the preheating pipe is connected to the second liquid inlet end, the end of the liquid outlet pipe away from the heating component is connected to the second liquid outlet end, the directional control valve is used to connect or block the first liquid inlet end and the first liquid outlet end, and to connect or block the first liquid inlet end and the second liquid outlet end, and to connect or block the second liquid inlet end and the second liquid outlet end, the water pressure detection component is provided at the end of the liquid outlet pipe away from the directional control valve, the water pressure detection component is used to detect the water pressure of the liquid outlet pipe, the directional control valve and the water pressure detection component are both communicatively connected to the controller, and the controller is used to control the working state of the directional control valve according to the detection signal of the water pressure detection component.

[0024] By adopting the above technical solution, when the water pressure value of the liquid outlet pipe is greater than or equal to the preset water pressure value, the water pressure detection component generates a first detection signal, and the controller controls the directional control valve to connect the first liquid inlet end and the first liquid outlet end, and to connect the first liquid inlet end and the second liquid outlet end, and to connect the second liquid inlet end and the second liquid outlet end according to the first detection signal of the water pressure detection component. The liquid in the liquid inlet pipe flows into the preheating pipe and the liquid outlet pipe at the same time, and the liquid in the preheating pipe flows into the liquid outlet pipe after being heated by the flue gas. The liquid in the liquid outlet pipe is heated by the heating component. Such an arrangement can not only achieve the technical effect of recycling and utilizing the waste heat of the flue gas, but also achieve the technical effect of quickly outputting hot water. Moreover, when the water pressure value of the liquid outlet pipe is less than the preset water pressure value, the water pressure detection component generates a second detection signal. The controller controls the directional control valve to block the first liquid inlet end and the first liquid outlet end, connect the first liquid inlet end and the second liquid outlet end, and block the second liquid inlet end and the second liquid outlet end according to the second detection signal of the water pressure detection component. The liquid in the liquid inlet pipe flows directly into the liquid outlet pipe, thereby preventing the preheating pipe from diverting the liquid in the liquid inlet pipe and causing the water pressure of the liquid outlet pipe to drop, and avoiding the reduction of the water outlet speed of the liquid outlet pipe, thereby improving the user experience of the gas water heater.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. By installing a blocking member within the buffer housing, the smoke is blocked by the blocking member after entering the buffer housing, reducing its velocity. The smoke then heats the liquid in the infusion tube within the buffer housing. Compared to existing technologies, this reduces the intensity of the impact of the smoke passing through the second outlet, thereby reducing noise. This improves the user experience of the gas water heater and achieves the technical effect of recycling waste heat from the smoke, thereby increasing the energy efficiency of the gas water heater.

[0027] 2. By providing multiple second air outlets, smoke flows out of the buffer housing through the multiple second air outlets, and multiple diverters simultaneously divert the smoke, thereby minimizing the concentration of smoke at a single second air outlet. This can prevent smoke from being unable to be discharged from the buffer housing in a timely manner, thereby preventing the heating component from having difficulty in absorbing cold air, and preventing the temperature of the heating component from exceeding the preset safety temperature value, thereby improving the operating reliability of the gas water heater.

[0028] 3. A heat exchange portion is formed in the buffer shell through the preheating tube, and the heat exchange portion is spirally wound around the outer peripheral wall of the blocking member, thereby extending the time for the liquid in the preheating tube to pass through the buffer shell. The flue gas can fully exchange heat with the liquid in the heat exchange portion, thereby recycling and utilizing the flue gas waste heat as much as possible, thereby further improving the energy utilization rate of the gas water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of a gas water heater according to the present application;

[0030] Figure 2 yes Figure 1 A magnified schematic diagram of point A in the middle;

[0031] Figure 3 is a cross-sectional view of a gas water heater according to the present application;

[0032] Figure 4 yes Figure 3 A magnified schematic diagram of point B in the middle;

[0033] Figure 5 is a schematic diagram of a partial structure of an airflow buffer and an infusion tube according to the present application;

[0034] Figure 6 is a cross-sectional view of a portion of the structure of a gas water heater according to the present application;

[0035] Figure 7 yes Figure 6 Enlarged schematic diagram of point C in the middle.

[0036] Description of reference numerals:

[0037] 100. Gas water heater;

[0038] 1. Install the housing; 11. Install the space;

[0039] 2. Heating assembly; 21. Heating space; 22. First air inlet; 23. First air outlet; 24. Fan; 25. Burner; 26. Heat exchanger; 27. Combustion chamber;

[0040] 3. Airflow buffer; 31. Buffer housing; 311. Buffer space; 312. Air inlet channel; 313. Air outlet channel; 314. Second air inlet; 315. Second air outlet; 316. Diverter; 317. Exhaust hole; 318. Accommodation hole; 3181. Limiting groove; 319. Shielding member; 3191. Exhaust channel; 3192. Communication hole; 32. Blocking member; 321. Buffer channel;

[0041] 4. Liquid infusion pipe; 41. Liquid inlet pipe; 42. Preheating pipe; 421. Heat exchange unit; 43. Liquid outlet pipe;

[0042] 5. Exhaust assembly; 51. Cover; 511. Pivot shaft; 512. Driven gear; 52. Driving member; 521. Driving portion; 522. Counterweight portion; 523. Driving gear;

[0043] 6. Directional control valve; 61. First liquid inlet; 62. First liquid outlet; 63. Second liquid inlet; 64. Second liquid outlet;

[0044] 7. Water pressure detection parts. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-Figure 7 This application is described in further detail.

[0046] The embodiment of the present application discloses a gas water heater 100 .

[0047] Reference Figure 1 、 Figure 3 and Figure 4 According to an embodiment of the present application, a gas water heater 100 includes: a mounting housing 1, a heating assembly 2, an airflow buffer 3, and a liquid infusion tube 4. The mounting housing 1 defines a mounting space 11, which is in communication with the external environment. Specifically, the outer peripheral wall of the mounting housing is provided with a plurality of through-holes, which communicate with both the mounting space 11 and the external environment. Gas in the external environment enters the mounting housing 1 through the through-holes in the outer peripheral wall of the mounting housing 1.

[0048] The heating component 2 is arranged in the installation shell 1, and the heating component 2 defines a heating space 21. A first air inlet 22 is provided at the bottom of the heating component 2, and a first air outlet 23 is provided at the top of the heating component 2. The first air inlet 22 and the first air outlet 23 are both connected to the heating space 21.

[0049] Specifically, the heating assembly 2 includes a fan 24, a burner 25, a heat exchanger 26 and a combustion chamber 27. The combustion chamber 27 defines a heating space 21. Along the height direction of the installation shell 1, the burner 25 is arranged in the combustion chamber 27 and is located at the bottom of the combustion chamber 27. The heat exchanger 26 is arranged in the combustion chamber 27 and is located at the top of the combustion chamber 27. The fan 24 is arranged on the outer bottom wall of the combustion chamber 27. The bottom wall of the combustion chamber 27 is provided with a first air inlet 22, and the top of the combustion chamber 27 is provided with a first air outlet 23. The fan 24 is opposite to and connected to the first air inlet 22. The fan 24 blows gas into the combustion chamber 27 through the first air inlet 22. The burner 25 is used to burn fuel gas to heat the gas. The burned gas is converted into flue gas. The flue gas exchanges heat with the liquid in the heat exchanger 26 to heat the liquid. After the flue gas and the liquid complete the heat exchange, the flue gas flows out of the combustion chamber 27 through the first air outlet 23. The height direction of the installation shell 1 can refer to Figure 3 The up and down directions in .

[0050] The airflow buffer 3 includes a buffer shell 31 and a blocking member 32. The bottom of the buffer shell 31 is connected to the first air outlet 23, and the top of the buffer shell 31 extends out of the mounting shell 1. The buffer shell 31 defines a buffer space 311. The blocking member 32 is arranged in the buffer shell 31. The blocking member 32 separates the buffer space 311 into an air inlet channel 312 and an air outlet channel 313, and the air inlet channel 312 and the air outlet channel 313 are connected. The bottom wall of the buffer shell 31 is provided with a second air inlet 314, and the second air inlet 314 is connected to the air inlet channel 312 and the heating space 21. The top wall of the buffer shell 31 is provided with a second air outlet 315 connected to the air outlet channel 313. The smoke passes through the air inlet channel 312 and the air outlet channel 313 in turn. The blocking member 32 is used to block the smoke.

[0051] In some specific embodiments, along the first direction of the buffer shell 31, the first direction of the buffer shell 31 may be Figure 3 In the left and right directions, the left end of the blocking member 32 is connected to and cooperates with the inner left side wall of the buffer shell 31, and the right end of the blocking member 32 is spaced apart from the inner right side wall of the buffer shell 31. Along the height direction of the buffer shell 31, the air inlet channel 312 is located below the air outlet channel 313.

[0052] Specifically, after the flue gas flows out of the heating component 2, the flue gas flows into the air inlet channel 312 through the second air inlet hole 314. The flue gas is blocked by the blocking member 32, and the flue gas cannot directly pass through the buffer shell 31 and flow out of the buffer shell 31 from the second air outlet hole 315. The flue gas passes through the air inlet channel 312 and the air outlet channel 313 in turn, and then the flue gas flows out of the buffer shell 31 from the second air outlet hole 315.

[0053] Moreover, in the process of the smoke passing through the air inlet channel 312 and the air outlet channel 313 in sequence, the smoke is blocked by the blocking member 32 to reduce the speed of the smoke, and then the smoke flows toward the air inlet channel 312 and flows out of the buffer shell 31 through the second air outlet hole 315. When the smoke passes through the second air outlet hole 315, the intensity of the collision impact between the smoke and the second air outlet hole 315 can be reduced, thereby reducing the noise when the smoke passes through the second air outlet hole 315.

[0054] In some specific embodiments, the shape of the buffer shell 31 and the shape of the blocking member 32 can both be configured as a ring. In other specific embodiments, the shape of the buffer shell 31 and the shape of the blocking member 32 can both be configured as a square.

[0055] Furthermore, the outer peripheral wall of the buffer shell 31 may be provided with sound-absorbing cotton.

[0056] The liquid infusion tube 4 passes through the airflow buffer 3 and the heating component 2 in sequence. The flue gas in the heating component 2 and the airflow buffer 3 is used to heat the liquid in the liquid infusion tube 4. Specifically, the liquid in the liquid infusion tube 4 flows through the airflow buffer 3 and the heating component 2 in sequence. In the airflow buffer 3, the flue gas and the liquid infusion tube 4 perform heat exchange, thereby achieving the technical effect of the flue gas heating the liquid in the liquid infusion tube 4, so as to achieve the technical effect of recycling the waste heat of the flue gas. The liquid heated by the flue gas flows into the heating component 2, and the heating component 2 heats the liquid in the liquid infusion tube 4. Finally, the liquid heated by the heating component 2 flows out of the gas water heater 100 from the liquid infusion tube 4.

[0057] Thus, by providing the blocking member 32 within the buffer housing 31, after the smoke enters the buffer housing 31, the smoke is blocked by the blocking member 32 to reduce the smoke's velocity, and the smoke heats the liquid in the liquid infusion tube 4 within the buffer housing 31. Compared with the prior art, when the smoke passes through the second air outlet 315, the intensity of the collision between the smoke and the second air outlet 315 can be reduced, thereby reducing the noise generated by the smoke passing through the second air outlet 315. This can improve the user experience of the gas water heater 100, and can achieve the technical effect of recycling waste heat from the smoke, thereby improving the energy efficiency of the gas water heater 100.

[0058] Reference Figure 3 and Figure 4In some embodiments of the present application, there are multiple blocking members 32, and the multiple blocking members 32 are spaced apart in sequence from the inside to the outside along the radial direction of the buffer shell 31. One blocking member 32 among any two adjacent blocking members 32 is arranged on the inner top wall of the buffer shell 31, and the other blocking member 32 is arranged on the inner bottom wall of the buffer shell 31. The blocking member 32 arranged on the inner top wall of the buffer shell 31 is spaced apart from the inner bottom wall of the buffer shell 31. The blocking member 32 arranged on the inner bottom wall of the buffer shell 31 is spaced apart from the inner top wall of the buffer shell 31. Along the radial direction of the buffer shell 31, the innermost blocking member 32 among the multiple blocking members 32 is arranged on the inner bottom wall of the buffer shell 31 and is arranged in a ring around the outside of the second air inlet 314. The outermost blocking member 32 among the multiple blocking members 32 is arranged on the inner top wall of the buffer shell 31.

[0059] That is to say, along the radial direction of the buffer shell 31 from the inside to the outside, the blocking member 32 among the multiple blocking members 32 close to the second air inlet hole 314 is arranged on the inner bottom wall of the buffer shell 31, and the second air inlet hole 314 is covered by the blocking member 32 among the multiple blocking members 32 close to the second air inlet hole 314, and the blocking member 32 among the multiple blocking members 32 close to the inner peripheral wall of the buffer shell 31 is arranged on the inner top wall of the buffer shell 31.

[0060] Moreover, along the radial direction of the buffer shell 31, the air inlet channel 312 is located on the inner side of the innermost blocking member 32 among the multiple blocking members 32, and the air outlet channel 313 is located between the inner peripheral wall of the buffer shell 31 and the outer peripheral wall of the outermost blocking member 32 among the multiple blocking members 32.

[0061] A buffer channel 321 is defined between any two adjacent blocking members 32 . The buffer channel 321 is located between the air inlet channel 312 and the air outlet channel 313 . The buffer channel 321 is in communication with both the air inlet channel 312 and the air outlet channel 313 .

[0062] Specifically, after the smoke enters the air inlet channel 312, the smoke passes through at least one buffer channel 321 and enters the air outlet channel 313. When the smoke passes through the buffer channel 321, the smoke is blocked by multiple blocking members 32, thereby further reducing the speed of the smoke, further reducing the intensity of the collision impact between the smoke and the second air outlet 315, and further reducing the noise when the smoke passes through the second air outlet 315.

[0063] Reference Figure 4 and Figure 5In some embodiments of the present application, there are multiple second air outlet holes 315, and multiple diverter pieces 316 are provided in the air outlet channel 313. The multiple second air outlet holes 315 and the multiple diverter pieces 316 are spaced apart along the circumferential direction of the buffer shell 31, and the multiple diverter pieces 316 are arranged one-to-one corresponding to the multiple second air outlet holes 315. One end of the diverter piece 316 is provided on the inner top wall of the buffer shell 31, and the other end of the diverter piece 316 extends toward the bottom wall of the buffer shell 31. The diverter piece 316 is connected between the inner circumferential wall of the buffer shell 31 and the blocking piece 32. The diverter piece 316 is used to divert and buffer the smoke.

[0064] Specifically, along the height direction of the buffer shell 31, the upper end of the diverter 316 is connected and matched with the inner top wall of the buffer shell 31, along the radial direction of the buffer shell 31, the outer side wall of the diverter 316 is connected and matched with the inner peripheral wall of the buffer shell 31, the inner side wall of the diverter 316 is connected and matched with the outer peripheral wall of the blocking member 32, the lower end of the diverter 316 extends toward the bottom wall of the buffer shell 31, and the lower end of the diverter 316 is spaced apart from the inner bottom wall of the buffer shell 31. The height direction of the buffer shell 31 can be up to Figure 3 The up and down directions in .

[0065] In some specific embodiments, when the shapes of the buffer housing 31 and the diverter 316 are both circular, the lower end of the diverter 316 is spirally extended toward the bottom wall of the buffer housing 31 .

[0066] By setting up multiple second air outlet holes 315, the smoke flows out of the buffer shell 31 from the multiple second air outlet holes 315, and the multiple diverter pieces 316 divert the smoke at the same time, so as to avoid the smoke from concentrating on one second air outlet hole 315 as much as possible, avoid the smoke from being unable to be discharged from the buffer shell 31 in time, resulting in the heating component 2 having difficulty in inhaling cold air, avoid the temperature of the heating component 2 being higher than the preset safety temperature value, and thus improve the working reliability of the gas water heater 100.

[0067] Reference Figure 2 、 Figure 4 、 Figure 6 and Figure 7 In some embodiments of the present application, the gas water heater 100 may further include: an exhaust assembly 5, the top wall of the buffer shell 31 is provided with an exhaust hole 317 and a receiving hole 318, the receiving hole 318 is opposite to and connected with the air inlet channel 312, the exhaust hole 317 is provided with a shielding member 319 near the end wall cover of the air inlet channel 312, the shielding member 319 is opposite to the air inlet channel 312 and defines an exhaust channel 3191, the outer peripheral wall of the shielding member 319 is provided with at least one connecting hole 3192, the exhaust hole 317, the connecting hole 3192, the exhaust channel 3191 and the air inlet channel 312 are connected to each other.

[0068] Specifically, along the height direction of the buffer shell 31, the exhaust hole 317, the accommodating hole 318 and the shielding member 319 are all located above the second air inlet hole 314, and the shielding member 319 is covered below the exhaust hole 317. The exhaust channel 3191 is defined between the shielding member 319 and the lower end wall of the exhaust hole 317. The connecting hole 3192 is connected to the exhaust channel 3191 and the air inlet channel 312, and the exhaust hole 317 is connected to the exhaust channel 3191. The flue gas is suitable for passing through the connecting hole 3192, the exhaust channel 3191 and the exhaust hole 317 in sequence to flow out of the buffer shell 31.

[0069] The exhaust assembly 5 includes a cover body 51 and a driving member 52. The cover body 51 is pivotally arranged on the exhaust hole 317. The cover body 51 is used to open or close the exhaust hole 317. The driving member 52 is movably arranged in the accommodating hole 318 and is transmission-connected to the cover body 51. The driving member 52 is suitable for being driven by smoke to drive the cover body 51 to rotate around the pivot axis 511 of the cover body 51 so that the cover body 51 opens the exhaust hole 317.

[0070] Specifically, when the air pressure value in the buffer shell 31 is greater than or equal to the preset air pressure value, the flue gas in the air inlet channel 312 drives the driving member 52 to move away from the air inlet channel 312 through the accommodating hole 318, and the driving member 52 drives the cover body 51 to rotate around the pivot axis 511 between the cover body 51 and the exhaust hole 317 to open the exhaust hole 317. The flue gas in the air inlet channel 312 flows out of the buffer shell 31 directly through the exhaust hole 317, thereby preventing the flue gas from flowing out of the buffer shell 31 through the second air outlet 315 too slowly, preventing the flue gas from accumulating in the buffer shell 31 and the combustion chamber 27 of the heating component 2, preventing the fan 24 from having difficulty in blowing the cold gas in the external environment into the combustion chamber 27, and preventing the temperature of the combustion chamber 27 from exceeding the preset safety temperature value, thereby improving the working reliability of the gas water heater 100.

[0071] In addition, the driving member 52 can control the degree to which the cover body 51 opens the exhaust hole 317 according to the air pressure value in the buffer shell 31. Specifically, when the air pressure value in the buffer shell 31 is much higher than the preset air pressure value, the driving part 521 drives the cover body 51 to fully open the exhaust hole 317. When the air pressure value in the buffer shell 31 is slightly higher than the preset air pressure value, the driving part 521 drives the cover body 51 to slightly open the exhaust hole 317, thereby preventing the cover body 51 from fully opening the exhaust hole 317 when the air pressure value in the buffer shell 31 is slightly higher than the preset air pressure value, and the flue gas in the buffer shell 31 all flows out of the shell through the exhaust hole 317, causing the gas water heater 100 to generate a large noise.

[0072] It should be noted that when the cover body 51 fully opens the exhaust hole 317, the cover body 51 rotates 90° relative to the position of the cover body 51 when the cover body 51 closes the exhaust hole 317. When the cover body 51 closes the exhaust hole 317, the cover body 51 is parallel to the upper end wall of the buffer shell 31.

[0073] When the air pressure value in the buffer shell 31 is lower than the preset air pressure value, under the action of gravity, the driving member 52 moves close to the air inlet channel 312, and the driving member 52 drives the cover body 51 to rotate around the pivot axis 511 between the cover body 51 and the exhaust hole 317 to close the exhaust hole 317.

[0074] It should be noted that when the smoke enters the air inlet channel 312 , the shielding member 319 blocks the exhaust hole 317 , and the smoke cannot directly impact the exhaust hole 317 , thereby preventing the smoke from directly flowing out of the buffer shell 31 through the exhaust hole 317 .

[0075] Reference Figure 4 、 Figure 6 and Figure 7 In some embodiments of the present application, the driving member 52 includes a driving portion 521 and a counterweight portion 522. The driving portion 521 is connected and cooperated with the counterweight portion 522, and the counterweight portion 522 is located at the end of the accommodating hole 318 close to the air inlet channel 312. That is, along the height direction of the buffer shell 31, the counterweight portion 522 is located below the driving portion 521, and the counterweight portion 522 is close to the open end of the accommodating hole 318, and the driving portion 521 is transmission-connected to the cover body 51.

[0076] Moreover, when the counterweight part 522 is driven by the flue gas, the counterweight part 522 drives the driving part 521 to drive the cover body 51 to rotate to open the exhaust hole 317. When the counterweight part 522 is not driven by the flue gas, the counterweight part 522 drives the driving part 521 to drive the cover body 51 to rotate to close the exhaust hole 317.

[0077] Specifically, when the air pressure value inside the buffer shell 31 is greater than or equal to the preset air pressure value, the smoke drives the counterweight part 522 to drive the driving part 521 to move away from the air inlet channel 312, and the driving part 521 drives the cover body 51 to rotate to open the exhaust hole 317. When the air pressure value inside the buffer shell 31 is less than the preset air pressure value, under the action of gravity, the counterweight part 522 drives the driving part 521 to move close to the air inlet channel 312, and the driving part 521 drives the cover body 51 to rotate to close the exhaust hole 317, thereby achieving the technical effect that the driving part 52 drives the cover body 51 to open or close the exhaust hole 317 according to the air pressure value inside the buffer shell 31.

[0078] Reference Figure 4 、 Figure 6 and Figure 7In some embodiments of the present application, the cover body 51 has a pivot shaft 511, which is pivotally connected to the inner peripheral wall of the exhaust hole 317. One end of the pivot shaft 511 extends into the accommodating hole 318 and a driven tooth 512 is provided in the end ring. The end wall of the driving part 521 opposite to the pivot shaft 511 is provided with a driving tooth 523. The driving tooth 523 extends along the height direction of the buffer shell 31, and the driving tooth 523 is meshed with the driven tooth 512.

[0079] When the counterweight part 522 drives the driving part 521 to move closer to or away from the air intake channel 312, the driving part 521 drives the pivot shaft 511 to rotate through the driving teeth 523 and the driven teeth 512, and the pivot shaft 511 drives the cover body 51 to rotate around the central axis of the pivot shaft 511, thereby achieving the technical effect of the driving part 521 driving the cover body 51 to rotate to open or close the exhaust hole 317.

[0080] Reference Figure 6 and Figure 7 In some embodiments of the present application, a limiting groove 3181 is provided on the inner peripheral wall of the accommodating hole 318, and the counterweight portion 522 is movably arranged in the limiting groove 3181 and is suitable for limiting cooperation with the limiting groove 3181. Specifically, along the height direction of the buffer shell 31, when the counterweight portion 522 is driven by the flue gas to move away from the air inlet channel 312, the counterweight portion 522 and the top wall of the limiting groove 3181 are stopped and limited. When the counterweight portion 522 moves close to the air inlet channel 312 under the action of gravity, the counterweight portion 522 and the bottom wall of the limiting groove 3181 are stopped and limited. Through the limiting cooperation between the counterweight portion 522 and the limiting groove 3181, the driving member 52 can be prevented from moving close to the air inlet channel 312 and separating from the accommodating hole 318 under the action of gravity, thereby improving the working reliability of the gas water heater 100.

[0081] Reference Figure 3 and Figure 5 In some embodiments of the present application, the liquid infusion tube 4 includes a liquid inlet tube 41, a preheating tube 42 and a liquid outlet tube 43. One end of the liquid inlet tube 41 is connected to one end of the preheating tube 42, the other end of the preheating tube 42 passes through the airflow buffer 3 and is connected to one end of the liquid outlet tube 43, and the other end of the liquid outlet tube 43 passes through the heating component 2. The liquid flows in from the end of the liquid inlet tube 41 away from the preheating tube 42, and flows out from the end of the liquid outlet tube 43 away from the preheating tube 42.

[0082] Specifically, the end of the liquid inlet pipe 41 away from the preheating pipe 42 is connected to the water supply equipment, and the end of the liquid outlet pipe 43 away from the preheating pipe 42 is connected to the water use equipment. The water supply equipment is used to transport liquid to the infusion pipe 4. The liquid flows through the liquid inlet pipe 41, the preheating pipe 42 and the liquid outlet pipe 43 in turn, and then the liquid flows from the liquid outlet pipe 43 into the water use equipment.

[0083] It should be noted that the liquid in the liquid delivery tube 4 is heated by the flue gas in the buffer shell 31 and is also heated by the heating component 2 .

[0084] In some specific embodiments, the water supply device may be a faucet, etc., the water-using device may be a shower, etc., and the liquid may be water.

[0085] The preheating tube 42 is formed with a heat exchange portion 421 in the buffer shell 31 . The heat exchange portion 421 is spirally wound around the outer peripheral wall of the blocking member 32 . The flue gas is used to heat the liquid in the heat exchange portion 421 .

[0086] In some specific embodiments, along the radial direction of the buffer shell 31, the heat exchange portion 421 is arranged around the outer peripheral wall of the outermost blocking member 32 among the multiple blocking members 32. In other specific embodiments, along the radial direction of the buffer shell 31, the heat exchange portion 421 is arranged around the outer peripheral wall of the innermost blocking member 32 among the multiple blocking members 32. In other specific embodiments, the heat exchange portion 421 is arranged around the outer peripheral wall of the blocking member 32 between the outermost blocking member 32 and the innermost blocking member 32 among the multiple blocking members 32.

[0087] A heat exchange portion 421 is formed in the buffer shell 31 through the preheating tube 42, and the heat exchange portion 421 is spirally wound around the outer peripheral wall of the blocking member 32, thereby extending the time for the liquid in the preheating tube 42 to pass through the buffer shell 31. The flue gas can fully exchange heat with the liquid in the heat exchange portion 421, so that the waste heat of the flue gas can be recycled and utilized as much as possible, thereby further improving the energy utilization rate of the gas water heater 100.

[0088] Reference Figure 3 In some embodiments of the present application, the gas water heater 100 may further include: a directional control valve 6, a water pressure detection component 7 and a controller, the directional control valve 6 is provided with a first liquid inlet end 61, a first liquid outlet end 62, a second liquid inlet end 63 and a second liquid outlet end 64, the liquid inlet pipe 41 is connected to the first liquid inlet end 61, one end of the preheating pipe 42 is connected to the first liquid outlet end 62, the other end of the preheating pipe 42 passes through the buffer shell 31 and is connected to the second liquid inlet end 63, and the end of the liquid outlet pipe 43 away from the heating component 2 is connected to the second liquid outlet end 64.

[0089] The directional control valve 6 is used to connect or block the first liquid inlet end 61 and the first liquid outlet end 62, as well as to connect or block the first liquid inlet end 61 and the second liquid outlet end 64, and to connect or block the second liquid inlet end 63 and the second liquid outlet end 64. The water pressure detection component 7 is provided at the end of the liquid outlet pipe 43 away from the directional control valve 6. The water pressure detection component 7 is used to detect the water pressure of the liquid outlet pipe 43. The directional control valve 6 and the water pressure detection component 7 are both communicatively connected to the controller. The controller is used to control the working state of the directional control valve 6 according to the detection signal of the water pressure detection component 7.

[0090] Specifically, when the water pressure value of the liquid outlet pipe 43 is greater than or equal to the preset water pressure value, the water pressure detection component 7 generates a first detection signal, and the controller controls the directional control valve 6 to connect the first liquid inlet end 61 and the first liquid outlet end 62, as well as the first liquid inlet end 61 and the second liquid outlet end 64, and the second liquid inlet end 63 and the second liquid outlet end 64 according to the first detection signal of the water pressure detection component 7. The liquid in the liquid inlet pipe 41 flows into the preheating pipe 42 and the liquid outlet pipe 43 at the same time, and the liquid in the preheating pipe 42 is heated by the flue gas and flows into the liquid outlet pipe 43. The liquid in the liquid outlet pipe 43 is heated by the heating component 2. Such a setting can not only achieve the technical effect of recycling and utilizing the waste heat of the flue gas, but also can achieve the technical effect of quickly outputting hot water at the same time.

[0091] Furthermore, when the gas water heater 100 starts working, the controller controls the directional control valve 6 to connect the first liquid inlet end 61 and the first liquid outlet end 62, and to connect the first liquid inlet end 61 and the second liquid outlet end 64, and to connect the second liquid inlet end 63 and the second liquid outlet end 64.

[0092] When the water pressure value of the liquid outlet pipe 43 is less than the preset water pressure value, the water pressure detection component 7 generates a second detection signal. The controller controls the directional control valve 6 to block the first liquid inlet end 61 and the first liquid outlet end 62, and connect the first liquid inlet end 61 and the second liquid outlet end 64, and block the second liquid inlet end 63 and the second liquid outlet end 64 according to the second detection signal of the water pressure detection component 7. The liquid in the liquid inlet pipe 41 flows directly into the liquid outlet pipe 43, thereby preventing the preheating pipe 42 from diverting the liquid in the liquid inlet pipe 41 and causing the water pressure of the liquid outlet pipe 43 to drop, and avoiding the reduction of the water outlet speed of the liquid outlet pipe 43, thereby improving the user experience of the gas water heater 100.

[0093] In some specific embodiments, the water pressure detection component 7 may be a pressure sensor or the like.

[0094] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A gas water heater, characterized in that: include: An installation housing (1), wherein the installation housing (1) defines an installation space (11), and the installation space (11) is in communication with an external environment; A heating component (2), the heating component (2) being arranged in the mounting housing (1), the heating component (2) defining a heating space (21), a first air inlet (22) being provided at the bottom of the heating component (2), a first air outlet (23) being provided at the top of the heating component (2), the first air inlet (22) and the first air outlet (23) both being in communication with the heating space (21); An airflow buffer (3), the airflow buffer (3) comprising a buffer shell (31) and a blocking member (32), the bottom of the buffer shell (31) being connected and matched with the first air outlet (23), the top of the buffer shell (31) extending out of the mounting shell (1), the buffer shell (31) defining a buffer space (311), the blocking member (32) being arranged in the buffer shell (31), the blocking member (32) dividing the buffer space (311) into an air inlet channel (312) and an air outlet channel (311). 3), and the air inlet channel (312) and the air outlet channel (313) are in communication, the bottom wall of the buffer shell (31) is provided with a second air inlet hole (314), the second air inlet hole (314) is in communication with both the air inlet channel (312) and the heating space (21), the top wall of the buffer shell (31) is provided with a second air outlet hole (315) in communication with the air outlet channel (313), the smoke passes through the air inlet channel (312) and the air outlet channel (313) in sequence, and the blocking member (32) is used to block the smoke; a liquid infusion tube (4), the liquid infusion tube (4) sequentially passing through the airflow buffer (3) and the heating component (2), the smoke in the heating component (2) and the airflow buffer (3) being used to heat the liquid in the liquid infusion tube (4); There are multiple blocking members (32), and the multiple blocking members (32) are sequentially spaced apart along the radial direction of the buffer shell (31). One of any two adjacent blocking members (32) is provided on the inner top wall of the buffer shell (31), and the other is provided on the inner bottom wall of the buffer shell (31). Along the radial direction of the buffer shell (31), the innermost blocking member (32) among the multiple blocking members (32) is provided on the inner bottom wall of the buffer shell (31) and is provided in a ring. On the outside of the second air inlet (314), the outermost blocking member (32) among the plurality of blocking members (32) is provided on the inner top wall of the buffer shell (31), and a buffer channel (321) is defined between any two adjacent blocking members (32), the buffer channel (321) is located between the air inlet channel (312) and the air outlet channel (313), and the buffer channel (321) is communicated with both the air inlet channel (312) and the air outlet channel (313); The invention also includes: an exhaust assembly (5); the top wall of the buffer shell (31) is provided with an exhaust hole (317) and a receiving hole (318); the receiving hole (318) is opposite to and communicates with the air inlet channel (312); the exhaust hole (317) is provided with a shielding member (319) near the end wall cover of the air inlet channel (312); the shielding member (319) is opposite to the air inlet channel (312) and defines an exhaust channel (3191); the outer peripheral wall of the shielding member (319) is provided with at least one communicating hole (3192); the exhaust hole (317) and the communicating hole (318) are opposite to and communicate with the air inlet channel (312); 192), the exhaust passage (3191) and the air inlet passage (312) are arranged in pairs and communicate with each other, the exhaust assembly (5) comprises a cover body (51) and a driving member (52), the cover body (51) is pivotally arranged on the exhaust hole (317), the driving member (52) is movably arranged on the accommodating hole (318) and is in transmission connection with the cover body (51), the driving member (52) is suitable for being driven by smoke to drive the cover body (51) to rotate around the pivot axis (511) of the cover body (51), so that the cover body (51) opens the exhaust hole (317); The driving member (52) includes a driving portion (521) and a counterweight portion (522), wherein the driving portion (521) is connected and matched with the counterweight portion (522), and the counterweight portion (522) is located at the end of the accommodating hole (318) close to the air inlet channel (312), and the driving portion (521) is transmission-connected with the cover body (51). When the counterweight portion (522) is driven by smoke, the counterweight portion (522) drives the driving portion (521) to drive the cover body (51) to rotate to open the exhaust hole (317); when the counterweight portion (522) is not driven by smoke, the counterweight portion (522) drives the driving portion (521) to drive the cover body (51) to rotate to close the exhaust hole (317).

2. A gas water heater according to claim 1, characterized in that: There are multiple second air outlet holes (315), and multiple diverter pieces (316) are provided in the air outlet channel (313). The multiple second air outlet holes (315) and the multiple diverter pieces (316) are spaced apart along the circumferential direction of the buffer shell (31), and the multiple diverter pieces (316) are arranged in a one-to-one correspondence with the multiple second air outlet holes (315). One end of the diverter piece (316) is provided on the inner top wall of the buffer shell (31), and the other end extends toward the bottom wall of the buffer shell (31). The diverter piece (316) is connected between the inner circumferential wall of the buffer shell (31) and the blocking piece (32). The diverter piece (316) is used to divert and buffer the smoke.

3. A gas water heater according to claim 1, characterized in that: The cover body (51) has a pivot shaft (511), and the pivot shaft (511) is pivotally connected to the inner peripheral wall of the exhaust hole (317). One end of the pivot shaft (511) extends into the accommodating hole (318) and the end ring is provided with a driven tooth (512). The driving part (521) is provided with a driving tooth (523), and the driving tooth (523) is meshed with the driven tooth (512).

4. A gas water heater according to claim 1, characterized in that: The inner peripheral wall of the accommodating hole (318) is provided with a limiting groove (3181), and the counterweight portion (522) is movably arranged in the limiting groove (3181) and is suitable for limiting cooperation with the limiting groove (3181).

5. A gas water heater according to claim 1, characterized in that: The liquid delivery pipe (4) includes a liquid inlet pipe (41), a preheating pipe (42) and a liquid outlet pipe (43). One end of the liquid inlet pipe (41) is connected to one end of the preheating pipe (42). The other end of the preheating pipe (42) passes through the airflow buffer (3) and is connected to one end of the liquid outlet pipe (43). The other end of the liquid outlet pipe (43) passes through the heating assembly (2). Liquid flows in from the end of the liquid inlet pipe (41) away from the preheating pipe (42) and flows out from the end of the liquid outlet pipe (43) away from the preheating pipe (42). The preheating pipe (42) is formed with a heat exchange portion (421) in the buffer shell (31). The heat exchange portion (421) is spirally wound around the outer peripheral wall of the blocking member (32). The flue gas is used to heat the liquid in the heat exchange portion (421).

6. A gas water heater according to claim 5, characterized in that: Also includes: A directional control valve (6), a water pressure detection element (7) and a controller, wherein the directional control valve (6) is provided with a first liquid inlet end (61), a first liquid outlet end (62), a second liquid inlet end (63) and a second liquid outlet end (64), the liquid inlet pipe (41) is in communication with the first liquid inlet end (61), one end of the preheating pipe (42) is in communication with the first liquid outlet end (62), the other end of the preheating pipe (42) is in communication with the second liquid inlet end (63), the end of the liquid outlet pipe (43) away from the heating component (2) is in communication with the second liquid outlet end (64), and the directional control valve (6) is used to connect or block the first liquid inlet end (61) ) and the first liquid outlet end (62), and is used to connect or block the first liquid inlet end (61) and the second liquid outlet end (64), and is used to connect or block the second liquid inlet end (63) and the second liquid outlet end (64), the water pressure detection element (7) is provided at one end of the liquid outlet pipe (43) away from the directional control valve (6), the water pressure detection element (7) is used to detect the water pressure of the liquid outlet pipe (43), the directional control valve (6) and the water pressure detection element (7) are both connected to the controller for communication, and the controller is used to control the working state of the directional control valve (6) according to the detection signal of the water pressure detection element (7).

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